Tomsi Mini Handheld Fan, Personal Cooling Fan with USB Rechargeable Battery Fan Small Portable Table Fan for Travel Office Room Household (Black)

    Press the switch for the first time: minimum wind force     Press the switch a second time: medium wind     Press the switch for the third time: Maximum wind force     Press the switch for the fourth time: end the work SPECIFICATIONS:     Material: ABS + PP     Size:15.1cmX7.9cmX2.7 cm     Working power:4W     Battery capacity: 14500/900mAh     Charging time: 2 hours     Working time: 1-2 hours Package Included:     1 x USB Fan     1 x USB Cable Please Note:     Do not put the fan under the blazing sun for quite a long time.     Do not let babies especially infants to  the fan during operation     Use standard DC 5V-1A power to charge the fan.     Please allow 1-3cm error due to manual measurement.Thanks for your understanding.